#include<bits/stdc++.h>
using namespace std;

int cal(int a,char b,int c)
{
	double res=0;
	if (b=='+') res=a+c;
	if (b=='-') res=a-c;
	if (b=='*') res=a*c;
	if (b=='/') res=a/c;
	if (b=='%') res=a%c;
	return res;
}

int main()
{
	int m,n;
	char o;
	cin>>m>>o>>n;
	cout<<cal(m,o,n)<<endl;
}